MOVABLE PARTITION MEMBER IN FORM OF OUTLET VALVE OR PISTON IN INTERNAL COMBUSTION ENGINE

摘要

mechanical engineering; engines. SUBSTANCE: proposed movable partition member in form of outlet valve or piston in internal combustion engine is covered with high-temperature corrosion-resistant material at side facing the combustion chamber. This material is made from granular initial material from alloy containing nickel and chromium which has been transformed by means of hot isostatic pressing into dense (coherent) material without melting of initial material. Corrosion- resistant material has hardness not less than 310 HV measured at 20 C after heating of material to temperature within 550 and 850 C and holding at this temperature for more than 400 h. EFFECT: increased service life of outlet valve and piston owing to use of high-temperature corrosion-resistant coating. 14 cl, 2 dwg